Since the Galaxy no longer fires in mid-air, the Bacchus is a way to ward off its deployment. Galaxy will be useless as a unstoppable 'combat help' if it can't be pulled in on-demand and on-location.
Hermes could concievably cover a Galaxy or Pod drop, but the Hermes 'abuse' complained about requires it to stay highly mobile, not hidden and stationary long enough to drop items. Hermes users rarely call in the Galaxy for support in combat, usually you see this being 'abused' by the slower, longer ranged vehicles.
Infantry cover distance fairly well (will outpace at least the Thor with jumps) and there's always the transport option for them. Remember the Bacchus launcher doesn't fire without LOS, so if it's hidden in extreme valleys or blocked by (terrain)walls its utility is diminished. You will know where it is at all times, so terrain and circumstance can be exploited.
I've seen you mention the massive discrepancy between attackers and defenders, Dark, and the problem is the options defenders have that attackers don't. This vehicle is the great equalizer in this regard.